Carbureter.



new and useful lmprovemenris rulers, of which the following is eswhereby vaporized petrol or oth n" srerrns Ann Devin iur'rennm,33.,h1fl3 zsne'c van nrscnrm on nos en sens, cnlnrosnrs.

emsuen'rnn Applies-mun ens Jensen; 5,

To all whom it may concern Beit known um we, Devin Mz'ror fln Jr., andlease VAN MITCHELL, hoeh oil; Jere of the United States, residingeizLive A geles, in-ihe county oi' Les A i "new of California, have joinetion. V Tins mvenlnon relates to fuel is. vaporized and mixed wi supplyto internzil combustion motel well understood by jxhose skilled in she"J, that when such motors oreoperul ngsi high speed there is a tendencyis overdrew upon the fuel supply, due to the highly increased suctionthrough illBJHQHlfQlii. or other means: of communication between themotor end the carbureter. This one not only e waste of 'fuel but.roduces imperfect som bustion and smutting oi. the motor Worhing partsand production of ohjectionrihle smoke andunburned products, evenproducing under certain conditions pre ignitionor ignition beforecomplete compression; eceuse of the over-richnessof the eiiplosivemixture. ln' erder to do away with these ohjectionable workingconditions, ,WB have de vised e, carbureterequipped with suitablebalancing valve In ehenism the efi'eot uponwhich of suchviolenelyinereesed suction is to auiomatieelly maintain a proper rel-ibetween the component-parts of the mixture namely the air and-vapor,thus prei enlcing the over enriching. "The-motor is gthus supv plied atall speeds wihhehe requisilge amount of mixture of thepreperne fiure, vI

The object oftheinventioh "is to provide e carburetor ofjthe perticnlernature stated pointed out in claims.

In the drawing: Figure l is a top plan view. partly' oroken ewey forclearness of .s e'numm is new room.

Pneeneed Jenn 2d, Ilhillh w n, gene! $121,029.

illustration, of a cs-rbureter constructed to embody the invention; andFig. 2 is a new verse vertical sectional W of the same,- lel l upon theline e Fig 1:

w orrespending parts iboth figures J d by the same referenee'oharucters;

' ing with pertieulhrit v no the ch '1 improved eerbure t-er 'nhody n isshown es corn. Willi a, chamber which s fuel into no u .suiisuhle ml; orsource of sup- 'lhe fuel supply ehnniher A, in its spc elficconstruction, is not concerned in issues of the invention. Thecerhurezer' proper has n tubulur bedy B composed inz the form.illustrated-0f two communicating members, b ends, lzhe member 3)extending lsterelly from his member cfthe wall 3 oi ihefn'iernber c, opeosite the niernher i being; provided. with an inlet duct l eonnnu: ating with a duct 5 through which fuel from. the chamber A. Une end. ofthe inhumher 5 is edeptedto be bolted on tothe rneni-, fold. or intakepipe l1, and oerries e throttle valve controlling the passage ofexplosive mixture Emmi-"the carbur'eter to ivhe inunifold, underauysuituble control.

F designates valve mechanism centre the passage of fuel through the ductthe member undlikewise contr ling passage of air into thelnember 6 shouter end. thereof; said value mechanism includmg is needle valve 6operating Wllill respect he s suitable seat? at the outlet end of inheduel; 4, end :a puppet valve 8 applied to a suitable seat 9 at the outeropen end of the ill) to play lengthwise in e bushing 10 screwed 4 into'esuitable opening in the easing B, e

compression spring 11 being coiled about theneedle valve between suchbushing and a shoulder 12 upon the valve. A compressionedjusting nuh 13is threaded on to the outer end of the valve 6,\being heldzigainstrotation by the s acedcheelrs ll upon a bracket 15 screwecfto the casingmember i), as at 16. Thebrecket 15 has two arms 15 and 15 to the formerof which is pivoted udjacenl; to one end, as at 17, a, lever arm-18having a nose 18 received between the bushing 10 and the nut 13. Anotherlever arm 19 islnivoteol to the 9.111115 as at 20, and has a short end20 projecting beneath an adjust- T mg s01 ew 2L; opererivel mounted indie le 'Jfhus,'.increase of suction or held against rotation by I It ismanifest that many variationsmay an adjusting nut 18 at the upper end ofthe stem 21 ot' puppet valve 8. The lever arm 19 is forked, as at 19 andreceived beneath a sleeve'22,-loosely surrounding the .valve stem 21 andholding one end of a coil 5 ring 23 the other end of which is heldlbeneath the nut-18 threaded to the .nppenend of such stem 21 The stem.21 through guide 24! extending the casingB. I p a.

In" use, as increased suction through the manifold/D or other tubularconnection and within the casing B, as per-- mitted by the throttlevalve E, the puppet plays vertically transversely in valve 8 isinfluenced-to further leaveits seat, the lever arms 18 and 19 beingswung so that the nose 18 tends to move the needle valve 6 farther awayfrom its seat; the two valves thus niqve in step. As the valve stem 21"descends the spring 23 is further compressed betvveen the lever arms l8and 19, such compression resisting the lowering of such valve stem, andconsequently resisting theopening movement of the valves 8 and 6. draftupon the mixture of the fuel, from the chamber A and air admitted pastthe valve 8, is accommodated by an automatic action of the valvemechanism F tending to oppose extreme unseating of the valve 6controlling the supply of fuel and the valve 8 controlling supply of airfor the mixture. The normal tension of the spring may be varied bymanipulatingthe adjusting screw 21, to relatively oscillate the. leverarms 18 and 19; and the normal tension of the spring 11 aii'ecti g theneedle valvemay 'be regulated by turning such valve in the nut 13 whichis the cheeks 14.

be made from the construction and combination of parts and detailedfeatures disclosed Without departing :t'rom the spirit of the invention.

is 'ereated air inlet valve,

connected lever arms acting oppositely upon said spring and one of whichoperatively connects said valves.

2. In a carbureter, a fuel inlet valve, an air inlet valve,'a springopposing the unseating of said valves, and two lever-arms actingoppositely upon said spring and one of which operatively connects saidvalves; there being means of operative connection between said leverarms.

3. In a carbureter, a fuel inlet valve, an air inlet valve,-'a springopposing the unseating of said valves, and two lever arms actingoppositely upon said spring and one of which operatively connects saidvalves; there being means of operative connection between said leverarms, and means for relatively adjusting said lever arms.

4. In a'carburet'er,

a spring opposing the un seating of said valves, and two lever armsacting oppositely upon said spring and one of which operatively connectssaid vaves; there being means'of operative connexion between saidle'ver'arms, and mean for relatively adjusting. said lever arms; saidlast named means comprising an adji sting screw applied to one of'saidlever arm. and bearing against the other on the opposite sides of thefulera thereof.

' In testimony whereof, We have signed our names to this specificationin the presence of two srbscribing witnesses.

DAVID MITCHELL, J R. ISAAC VAN MITCHELL.

W itnesses':

' RAYMOND Ivns BLAKESLEE,'

CL VELAND SCHULTZ.

a fuel inlet valve, an i

